Planoaraph co



M. 1i. AND R. B. HUGGINS.

CO UNTERBORING TOOL.

APPLICATION FILED JAN. 24,1918.

Patented Aug. 5, 1919.

II! V '3 Mar/'4 NEssEs W r BY ATTOR N EY UNITED OFFICE MURRAY .1 :rwssms orfnmneEr-omw, oonnnerrcwrl Rrorramr Br ninsems, on i Y i a MQVIIDDLEE'EOWNANEW Yosm; l a a a iooirnriinasonnts-roon Specificatioirofnetters1 atent. Aug,5 ,,19l19i,1

- application filed January 24, ie1's. serial no. 213,575,

To all whom z'tmay concern: s

Be it known thatwe, M RR Y J L HUGGI-NS and RICHARD B. HUsGrN-s, citizens of the United States, residing at liiridgeporia-filonn; and Middletowm N. Y., respectivelytin the counties of Fairfield, Co11neeticut,and 01 ange, New York, respectively have invented certain new and useful Improvements in Counterboring-Tools, of'which the following is a specification. I Q j l This invention relates to improvements in counter boringi tools. 1 a

The object of the invention is to construct a simple and efficient toolofthis character which may be secured in theclamp employed for holding the counterboring "tool of a punching machineor not, asdesired,

Another object is to provide improved means for controlling the position of the counter boring to'ol thereby governingthe depth of the counter bore. i With the foregoing and'other objects in View, which will appear a sfthe description proceeds, the invention resides in the com bination and arrangement of partsandi in the details of construction--hereinafter; described and claimed, it" being understood that changes in the precise embodiment of the invention herein disclosed be made within the-scope o-f-wha't is claimed: without departing from the spirit or: theiinventiont In the accompanying drawings a Figure l represents-a*p1anyiew oil'the tool constituting this invention with the cover plateremoifed,

Fig. 2 isa; transverse seetion taken on the line 2-2 of Figrl.

Fig. 3-is a longitudinal central section taken on the line 3 -3 of Fig, 1; a

Fig. 4 is a detail sectional yiew taken on the line 41- ofFig; 1. a f

Figx5 is adetail view of age 31.

In the embodiment illustrated the device constituting this invention comprises a base plate 1 having vertically ad ustable supporting legs 2, any desired number on which may be employed; four being here sliow'n, and it may be secured te -the work by any suitable means; These legs are held in adjusted positionto" prevent acci'dental turning thereof'by lock nuts i T his-base plate 1 is preferably substantially rectangular in form and" tapers toward one end, being provided at its small end with a gear lemming are a plurality of annular gear'seats 5, three of which are here shown, thetw-o' foremost being substantially of the same size and the rearinostbeing larger. Mounted to rotate in these seats 5 are a plurality of gears 6* and a smaller gear 7 is positioned inqthe gear seat 4:, all of said gears meshing and adapted tobe simultaneously turned by means presently to bedescribed. A larger gear seat 8' is formed in aline nent with the seatf5f and is designed to receive'a gear 9 carried by a driving shaft 10 through which the" train of gears is designed to be driven. p

The journals on which gears 6* are mount edare here shown in the form of screws" 11 which pass throughthe central openings in gears and detachably' engage threaded bores 1'2 formed" in the baseplate as is shown clearly; in Fig; 3. y f

s aft 13 extends'through gear 7, being fixed to turn; therewith and carries 'on' its lower end the cutting tool or hit 14 which is fixed] to moyew-ith said shaft, shown,

this shaft where it passes througlithe base plate 1 is reduojedinsize; although: it'need not necessarily be so formed, and is ro vided at its upper end with a'h'ead flo'between which and'the upper faceof gear 7 is disposed a coiled spring 16, the gearbeing shown provided with aseat I7 co-receive this spring l' y 1 rockinglever 18 is f ulerumed by means of a shaft 19 in two uprights 20- which haye threaded engagement with the "base plate on opposite sides o'f the train of gearing, said uprightsbeing arranged in transverse jalinement and :having openings in their upper ends to forin bearingsfor the shaftends 21 which are reduced and ha ve shoulders 22 at their inner ends;

y One-end of this leverlf 8 extends over and engages the headf 15 of shaft 13,*whil'eits other end lias-an'; opening or socket 23 "formed therein and extendin g from one side edge tot the other thereof, being designed to re'ceiyeone end of a fBdql6V92lL [The coiled spring 16 on shaft operates toinorinallyhold said shaft in raised position against meander face of lever 18 thereby rocking said lever and holding its other end in lowered position as shown in Fig.3; This spring 1 also holds the cutting tool ld' in raised position against the lower face of The feed lever 24 is fulcrumed in an upright 25 swiveled on the base plate 1, said upright havingits upper end shown bifurcated to receive said lever. The front end of said lever is twisted as shown at 26toposition its terminal in a plane at right angles to its body portion andthis terminal 27 has its free end inclined transversely as shown at 28 and is preferably provided on each face with a rib 29. This lever is designed to beinserted sidewise into the socket 23 atthe rear end of the rock lever 18 as is shown clearly in Figs. 1 and 3 and; is held against accidental disengagement therefrom byn eans of the rib 29.

This lever 24 has a handgrip 30 at its outer end, the fulcrum of said lever being positioned much nearerits front than its rear end so that aigreater leverage may be obtained for actuating the rock lever 18 against the tension of spring 16 for lowering the cutting tool 14. It is to be understood that this lowering of the cutting tool-provides for the extension orjncrease in the depth ofthe, counter bore formed thereby.

.A gage 31 is carried by thebaseplate 1, being adjustab-ly mounted-therein, the shank thereof" being shown threaded for-engagement With a threaded bore 32-extending through a base plate 1. This gage3l' is in the form of. an upright having alaterally extending arm at its-upper end which is designed tobe positioned, in the path of the feed lever 24: forlimiting the upward movement of its front end for regulating the raising .ofthe socketed end of lever Y18 and the depression of the cutting tool 14.

A; cover platef34 is preferably arranged over the upper face. of the base'plate 1, extending .under lever 18 and which is secured to said baseplate in any suitable or desired manner, said cover plate being designed to protect the train of gearing from dust and the like; v. I

. Inthe use 'of this device, the shaftlO being rotated from any suitable source of power, operates to drive the train of gearingand .thereby'rotate the cutting tool '14: which is designedtQjform a counter herein the work operatedfupon. Tofincrease the depthof the 'bore so formed, the operator; grasps the "handle 30 of the feed lever Qtiand forces it downwardly therebyelevating the socketed gend'of the rock lever, 18'1owering its opposite end, thus forcibly depressing-the cutter shaft' lgagainst the tension of the. spring 16 and causing said cutter to increase the depth of the bore being formed. Theiga'ge' 31 is preferably-first adjusted so as toregulate or limititheldepth that the tool 14 may be lowered .in' 'the manner above described;

j/Fromth foregoing description,taken in connection with the ac'companylng' drawings,

' kthe advantages of the" construction and of the method of operation will be readily ap- :the scopeof the claimed invention.

We claim 1. In a device of the class described, a base plate a shaft extending therethrough, a cutter fixed to said shaft and positioned on one side ofsaid base plate, a spring mounted on said-shaft on the other side of said base plate and adapted to hold said cutter in close proximity to said base plate, a rocking lever having one end positioned over said shaft for moving it against the tension of said spring, and a feed lever fulcrumed on said plate and adapted to engage said rocking lever for actuating it to project said cutter.

2. In a device of the class described, a base plate having a plurality of seats formed in one face thereof and communicating with each other, gears mounted in said seats and meshing with each other, a shaft carried by one of said gears and extending through said base plate, a cutter fixed to said shaft on the face of said plate opposite to that in which said seats are formed, a stop on the other end of said shaft, a coiled spring mounted on said shaft between said stop and the gear carried thereby, means for actuating said gears to rotate said cutter, and means under the control of the operator for projecting said shaft against the tension of said spring to vary the depth of the bore formed by the cutter. .7

3. In a device of the class described, a base plate having a plurality of seats formed in one face thereof and communicating with each other, gears mounted in said seats and meshing with each other, a shaft carried by one of said gears and extending through said base plate, a cutter fixed to said shaft on the face of said plate opposite to that in which said seats are formed, a stop 011 the other end of said shaft, a coiled spring mounted on said shaft between said stop and the gear carried thereby, means for actuating said gears to rotatesaid cutter, a rocking lever positioned above said base plate and having one end arranged over said shaft to engage the head thereof and its other end provided with a socket, a feed lever fulcrumed above the base plate and adapted to engage s'aid' socket whereby on the movement of the feed lever said rocking lever will be actuated to project said cutter against the tension of its spring.

4. In a device of the class described, a base plate, vertically adjustable legs engaged therewith, a rocking lever fulcrnmed on said plate in a plane above one face thereof, a

spring retracted cutter having a shaft positioned in the path of one endof said lever, a swiveled standard mounted on said plate, a feed lever fulcrumed on said standard, cooperating means carried by adjacent ends of said levers for cooperative engagement, a train of gearing connected to rotate said cutter, andmeans for actuating said gearing.

5. In a device of the class described, a base plate, adjustable legs engaged therewith, means for locking said legs in adjusted posit-ion, a shaft extending through said plate and having a cutter fixed to one end thereof and a gear to its other end, a stop carried by said last mentioned end at a point spaced from said gear, a coiled spring mounted on said end between said stop and gear, the shaft being slidable in said gear but rotatable therewith, a train of gears connected to actuate said shaft carried gear, and means under the control of the operator for projecting said shaft against the tension of its spring for regulating the cutting depth of the cutter.

6. In a device of the class described, a base plate, adjustable legs engaged therewith, means for locking said legs in adjusted Copies of this patent may be obtained for position, a shaft extending through said plate and having a cutter fixed to one end thereof and a gear to its other end, a stop carried by said last mentioned end at a point spaced from said gear, a coiled spring mounted on said end between said stop and gear, the shaft being slidable in said gear but rotatable therewith, a train of gears connected to actuate said shaft carried gear, a rocking lever having one end positioned to engage said shaft and its other end provided with a socket opening through its side edges, a feed leverfulcrumed on said base plate and swiveled to move in a horizontal plane, said feed lever having one end flattened and beveled at its terminal for interlocking engagement with the socket of said rocking lever whereby on the actuation of said feed lever said rocking lever is operated to project said cutter.

In testimony whereof we ailix our signatures in presence of two witnesses.

MURRAY J. HUGGINS.

. RICHARD B. HUGGINS.

Witnesses:

WILLIAM S. FOWLER, JOHN E. BURCH.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

